Like Dags90 said above, commercial mayo contains pasteurized eggs and is fairly acidic, so on its own it will not spoil if left out. Problems arise when the mayo becomes contaminated with other things (like the knife you just used to cut your chicken breast and spread the condiments on your crumbly bread or the potatoes/tuna/whatever in your salad).minarri said:I thought that once you've opened something perishable, you should keep it in the fridge so as to delay its inevitable putrification.
When I was living in Japan it seemed a lot of people didn't bother refrigerating their mayonnaise either, which was particularly puzzling to me since I thought the stuff contains egg.
Ketchup and mayonnaise do taste better cold, and from what I understand mayonnaise breaks down into a gross, oily (but still wholly edible) mess if left in the heat.
Bread + fridge = dry, stale, nasty bread. Store-bought bread has enough preservatives that as long as you eat it at a rate faster than 1 slice/week you should be fine.THGhost said:Precisely why it should be kept in the fridge.
Someone told me that you shouldn't keep bread in the fridge either. But it would go mouldy if you didn't, so clearly they're an idiot![]()
Also, everyone:




NOT THE SAME.
